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V. Use of Explosives <br /> A. The applicant has proposed to conduct blasting less than 1,000 feet from a school, <br /> church,hospital,or nursing facility,or less than 500 feet from disposal wells,petroleum <br /> or gas storage facilities,municipal water-storage facilities,fluid-transmission pipelines, <br /> gas or oil collection lines, or water or sewage lines. The Division proposes to approve <br /> these lesser distances based upon pre-blasting surveys,seismic investigations,and other <br /> appropriate investigations (4.08.4(7)). <br /> B. The Division is proposing to approve the use of seismograph recorders to aide in the <br /> design of blasts to determine maximum weight of explosives per delay. The design is <br /> based upon cumulative seismograph records of each blast. The designs ensure that <br /> blasts will not result in a failure and comply with the limitations of 4.08.4(10) at a 95 <br /> percent level of confidence. (4.08.6(2)). <br /> Vl. Backfilling and Grading <br /> A. The Division proposes to approve the applicant's plan for disposal of acid-forming or <br /> toxic materials in a manner designed to prevent contamination of ground or surface <br /> waters (4.14.3(1)(a)). <br /> B. Since this is a truck and shovel operation, backfilling and grading of the overburden <br /> occurs simultaneous with overburden removal. The generation of excess overburden <br /> is not anticipated. <br /> VII. Revegetation <br /> A. The Division proposes to approve the use of introduced species in the reclamation seed <br /> mix. The applicant has submitted information which shows that the introduced species <br /> are desirable and necessary to achieve the approved post-mining land use, and are not <br /> poisonous or noxious (4.15.2). <br /> B. The Division proposes to approve the use of a cover crop as a means to meet soil <br /> stabilization requirements (4.15.4). <br /> C. Methods to measure herbaceous cover and production, species diversity, and woody <br /> plant density are discussed in the permit application. These techniques include: <br /> 20 <br />